Code A:
tx = s.beginTransaction();
s.save(wo);
tx.commit();

Code B:
s.save(wo);
s.flush();


Assuming I have Hibernate 2.1 configured to work with TreeCache in JBoss 3.2.6:

In Code A, when 'tx.commit()' is executed, does it write the 'wo' object to the database or the treecache or both? What about Code B? Does it write to the database, treecache, or both? Just trying to understand the API when a JVM-level cache is involved.

Why should the cache change the semantics of the API?